Vir\u016f jsou tajemn\u00e9 a smrt\u00edc\u00ed entity, kter\u00e9 su\u017euj\u00ed lidstvo po stalet\u00ed. Nejsou to \u017eiv\u00e9 organismy, ale sp\u00ed\u0161e mal\u00e9 \u010d\u00e1stice genetick\u00e9ho materi\u00e1lu (RNA nebo DNA) obklopen\u00e9 b\u00edlkovinn\u00fdm obalem. Navzdory sv\u00e9 jednoduchosti mohou viry zp\u016fsobit ni\u010div\u00e1 onemocn\u011bn\u00ed jak u lid\u00ed, tak u zv\u00ed\u0159at.<\/p>\n\n
Vir Marburg a Ebola, kter\u00e9 pat\u0159\u00ed do skupiny zn\u00e1m\u00e9 jako \u201enitkovit\u00e9 viry\u201c, pat\u0159\u00ed k nejsmrteln\u011bj\u0161\u00edm vir\u016fm zn\u00e1m\u00fdm lidstvu. Tyto viry jsou vysoce naka\u017eliv\u00e9 a mohou zp\u016fsobit t\u011b\u017ekou hemoragickou hore\u010dku vedouc\u00ed k selh\u00e1n\u00ed org\u00e1n\u016f a smrti.<\/p>\n\n
K prvn\u00edmu zn\u00e1m\u00e9mu propuknut\u00ed viru Marburg do\u0161lo v roce 1967 v N\u011bmecku. Sedm lid\u00ed zem\u0159elo na virus, kter\u00fd byl vysledov\u00e1n k africk\u00fdm zelen\u00fdm opic\u00edm pou\u017e\u00edvan\u00fdm p\u0159i v\u00fdrob\u011b vakc\u00edn.<\/p>\n\n
Virus Ebola se poprv\u00e9 objevil v S\u00fad\u00e1nu v roce 1976 a zabil polovinu sv\u00fdch ob\u011bt\u00ed. O dva m\u011bs\u00edce pozd\u011bji zas\u00e1hl Zair smrteln\u011bj\u0161\u00ed kmen viru Ebola, kter\u00fd infikoval p\u0159es 300 lid\u00ed a zabil 90 % z nich.<\/p>\n\n
V roce 1989 ude\u0159il virus Ebola znovu, tentokr\u00e1t v kolonii africk\u00fdch opic um\u00edst\u011bn\u00fdch v p\u0159\u00edm\u011bstsk\u00e9m n\u00e1kupn\u00edm centru v Restonu ve Virginii. Americk\u00e1 arm\u00e1da byla povol\u00e1na, aby ohnisko zadr\u017eela a zabr\u00e1nila \u0161\u00ed\u0159en\u00ed smrt\u00edc\u00edho viru.<\/p>\n\n
Arm\u00e1dn\u00ed vy\u0161et\u0159ov\u00e1n\u00ed odhalilo, \u017ee kmen viru Ebola z Restonu nebyl pro \u010dlov\u011bka tak smrteln\u00fd jako kmen ze Zairu. P\u0159esto byl st\u00e1le vysoce naka\u017eliv\u00fd a p\u0159edstavoval zna\u010dnou hrozbu.<\/p>\n\n
V\u011bdci z arm\u00e1dn\u00edho \u00dastavu l\u00e9ka\u0159sk\u00e9ho v\u00fdzkumu infek\u010dn\u00edch chorob (USAMRIID) ne\u00fanavn\u011b pracovali na identifikaci a v\u00fdvoji l\u00e9\u010dby viru Ebola. Zjistili, \u017ee virus se m\u016f\u017ee p\u0159en\u00e1\u0161et kontaktem s infikovan\u00fdmi t\u011bln\u00edmi tekutinami nebo kontaminovan\u00fdmi povrchy.<\/p>\n\n
V\u00fdzkumn\u00edci tak\u00e9 zjistili, \u017ee virus Ebola m\u016f\u017ee rychle mutovat, co\u017e zt\u011b\u017euje v\u00fdvoj \u00fa\u010dinn\u00fdch vakc\u00edn a l\u00e9\u010dby.<\/p>\n\n
V\u011bdci se domn\u00edvaj\u00ed, \u017ee vznik smrt\u00edc\u00edch vir\u016f, jako je Ebola a Marburg, souvis\u00ed s lidsk\u00fdm z\u00e1sahem do de\u0161tn\u00fdch prales\u016f. P\u0159edpokl\u00e1d\u00e1 se, \u017ee tyto viry s\u00eddl\u00ed v netop\u00fdrech a dal\u0161\u00edch zv\u00ed\u0159atech, kter\u00e1 \u017eij\u00ed v t\u011bchto ekosyst\u00e9mech.<\/p>\n\n
Kdy\u017e lid\u00e9 k\u00e1cej\u00ed de\u0161tn\u00e9 pralesy kv\u016fli zem\u011bd\u011blstv\u00ed nebo rozvoji, p\u0159ich\u00e1zej\u00ed do u\u017e\u0161\u00edho kontaktu s t\u011bmito zv\u00ed\u0159aty, co\u017e zvy\u0161uje riziko p\u0159enosu vir\u016f.<\/p>\n\n
Hrozba budouc\u00edch virov\u00fdch ohnisek je rostouc\u00ed obavou v\u011bdc\u016f a zdravotnick\u00fdch \u00fa\u0159ad\u016f. Zm\u011bna klimatu, odles\u0148ov\u00e1n\u00ed a globalizace jsou faktory, kter\u00e9 by mohly p\u0159isp\u011bt ke vzniku nov\u00fdch a smrteln\u011bj\u0161\u00edch vir\u016f.<\/p>\n\n
V\u00fdzkumn\u00edci pracuj\u00ed na v\u00fdvoji nov\u00fdch vakc\u00edn a l\u00e9\u010dby virov\u00fdch onemocn\u011bn\u00ed. Studuj\u00ed tak\u00e9 roli vir\u016f v ekosyst\u00e9mu a zkoumaj\u00ed zp\u016fsoby, jak p\u0159edch\u00e1zet budouc\u00edm ohnisk\u016fm.<\/p>\n\n
B\u011bhem propuknut\u00ed viru Ebola v Restonu podnikla arm\u00e1da kroky, kter\u00e9 n\u011bkte\u0159\u00ed pova\u017eovali za neetick\u00e9, jako nap\u0159\u00edklad ignorov\u00e1n\u00ed z\u00e1kona a klam\u00e1n\u00ed tisku. Tato rozhodnut\u00ed byla u\u010din\u011bna ve snaze virus zadr\u017eet a zabr\u00e1nit rozs\u00e1hlej\u0161\u00edmu propuknut\u00ed.<\/p>\n\n
Vyvol\u00e1vaj\u00ed v\u0161ak d\u016fle\u017eit\u00e9 ot\u00e1zky ohledn\u011b rovnov\u00e1hy mezi ve\u0159ejnou bezpe\u010dnost\u00ed a individu\u00e1ln\u00edmi pr\u00e1vy b\u011bhem krize ve\u0159ejn\u00e9ho zdrav\u00ed.<\/p>\n\n
Vir\u016f jsou neust\u00e1lou hrozbou pro lidsk\u00e9 zdrav\u00ed. Jsou to komplexn\u00ed a smrt\u00edc\u00ed entity, kter\u00e9 se mohou rychle p\u0159izp\u016fsobit a mutovat. V\u011bdci pracuj\u00ed na porozum\u011bn\u00ed t\u011bmto vir\u016fm a v\u00fdvoji zp\u016fsob\u016f, jak p\u0159edch\u00e1zet nemocem, kter\u00e9 zp\u016fsobuj\u00ed, a l\u00e9\u010dit je.<\/p>","protected":false},"excerpt":{"rendered":"
Nebezpe\u010dn\u00e1 z\u00f3na: Odhalen\u00ed d\u011bsiv\u00e9ho sv\u011bta smrt\u00edc\u00edch vir\u016f Povaha vir\u016f Vir\u016f jsou tajemn\u00e9 a smrt\u00edc\u00ed entity, kter\u00e9 su\u017euj\u00ed lidstvo po stalet\u00ed. Nejsou to \u017eiv\u00e9 organismy, ale sp\u00ed\u0161e mal\u00e9 \u010d\u00e1stice genetick\u00e9ho materi\u00e1lu…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[762],"tags":[5916,5918,5917,5915,178,5832,5919],"class_list":["post-3033","post","type-post","status-publish","format-standard","hentry","category-life-sciences","tag-ebola","tag-rainforest-ecology","tag-marburg","tag-deadly-viruses","tag-public-health","tag-virology","tag-viral-outbreaks"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/3033","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=3033"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/3033\/revisions"}],"predecessor-version":[{"id":3034,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/3033\/revisions\/3034"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=3033"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=3033"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=3033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}